Tributary Area Practice Problem

Shown is a Floor Framing with two major zones. ZONE $BC-13$ the secondary beams $($ S $2)$ are spaced at $12-$ft oncenter with a span of $18-ft$ and thus needing a thicker slab which leads to a higher dead load totaling $120$ psf $($slab weight plus other dead loads such as ceiling, floor finishes, mechanical devices etc etc$),$ ZONE AB$\_13$ the secondary beams $($ S $1)$ are spaced at $6-$ft On $-$center with a span of $20-ft.$ The dead load for this zone is $75$ psf $.$ For both zones the live load is $40-$psf$.$ There are a total of $5$ Girders $($Beams that carry other beams$).$ Girder G$6$ is supported by girders G$2$ and G$3.$ There are Columns at A$1,$ A$3,$ B$1,$ B$3,$ C$1$ and C$3.$ There are NO Columns at A$2,$ B$2$ and C$3..$ Assume that if the slab spans Ratio L$1/$L$2<mtext></mtext><mn>2</mn>$ it is a TWO$-$WAY SLAB $($L$1>$L$2),$ OTHERWISE assume ONE$-$WAY SLAB.

Based on this information Determine the loads acting on the secondary beams, All the girders and all the columns, NEGLECTING THE SELF WEIGHTS OF THE BEAMS AND GIRDERS